In conclusion, we have demonstrated the arbitrary control of the density profile of an ultracold 2D quantum gas by tailoring a repulsive optical potential. We have also demonstrated the arbitrary creation of spin textures using spatially resolved Raman transitions. An iterative method was applied, making the method robust to technical imperfections. The approach described here can be straightforwardly applied to other atomic species (bosonic or fermionic). It opens new possibilities for studying the dynamics of single or multi-component low-dimensional gases where, for instance, the presence of scale-invariance or integrability leads to a rich variety of non-trivial time evolutions [1]}, [2]}, [3]}, [4]}.
